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CVE-2026-105134: Ahsay AhsayCBS Command Injection Vulnerability

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-10-14
• EPSS: 81.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-10-04 · updated 2026-10-26
• Weakness: CWE-77

Description

A flaw has been found in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This vulnerability affects unknown code of the file /rps/api/json/UpdateReceivers.do of the component Replication Receiver. Executing a manipulation of the argument random can lead to os command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. Upgrading to version 9.15.2.70 and 10.3.4.45 is able to resolve this issue. Upgrading the affected component is advised. The initial patch did not fix the security vulnerability properly. An update of the CVE entry to reflect this became necessary.

Affected products

• Ahsay Cloud Backup Suite: before 9.15.2.70; from 10.1.0 before 10.3.4.45 — fixed in 9.15.2.70, 10.3.4.45

How to fix

Upgrade to a fixed version: Ahsay Cloud Backup Suite 9.15.2.70, 10.3.4.45. Check the vendor advisory for mitigations.

References

• https://vuldb.com/cve/CVE-2026-105134
• https://vuldb.com/submit/942743
• https://vuldb.com/vuln/413351
• https://vuldb.com/vuln/413351/cti
• https://www.ahsay.com/en/company/announcements/patch-cve-105133-105134-update
• https://www.huntress.com/blog/ahsaycbs-flaws-exploit
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-105134

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